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jeka94
4 years ago
12

What is the answer to -7+2w=-1

Mathematics
1 answer:
ad-work [718]4 years ago
4 0

Hey, thanks for sendin your question today :)

Let's solve -7+2w=-1!

Simplify both sides of the equation  

2w−7=−1

Add 7 to both sides.

2w−7+7=−1+7

Simplify.

2w=6

Divide both sides by 2.

w = 3

Glad we would work together today :)

Your feedback is lovely, please let me know how I did by rating me below.

Have a good day/night!

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1% of women at age 40 who participate in routine screening have breast cancer. 80% of women with breast cancer get positive mamm
andre [41]

Answer:

0.0776

Step-by-step explanation:

In order to solve this problema, Baye´s rule is used. Ii is expressed as follows:

P(A if B)=(P(B if A)*P(A))/(P(B))

Let A be women who have cancer and let B be women who have positive mammographies

So, P(B if A) would be women with breast cancer get positive mammographies

P(B if A) = 0.8

P(A) would be women with breast cancer

P(A) = 0.01

P(B) would be the women with positive mammographies. We don´t know it.

In order to find it we use law of total probability

P(B) = P(positive mammographies and cancer) + P(positive mammographies without cancer)

P(B) = 0.8*.01+0.096*0.99  

P(B) = 0.103

With P(B) calculated we can complete the equation:

P(A if B)=(0.8*0.01)/0.103=0.0776

Probability is 0.0776

5 0
3 years ago
Please help me i dont know how to do this
Vaselesa [24]

Answer:

I can't give you an exact answer because the graph is too blurry.

Step-by-step explanation:

however I can tell you how to answer it,

so all you need to do is take each point on the graph and add 2 to the y coordinate and add 5 to the x. you so this because it says up and to the right. hope this helps

5 0
4 years ago
Given the first type of plot indicated in each pair: which of the second plots could not always be generated from it? a. dot plo
Elenna [48]

Answer:

C

Step-by-step explanation:

Dot plot is usually in the form of stem & leaf. The only difference is that, stem& leaf presents the actual values while dot plot usually represent the value in dots. Hence, we can easily generate dot plot from stem & leaf!

For (a) dot plot and box plot, dot plot presents all the data while box plot presents only the five-num statistics, namely:

1. minimum

2. 1st quartile (Q1)

3. median

4. 3rd quartile (Q3)

5. Maximum

And outliers, if any!

Thus, dot plot cannot directly generate box plot

For (b). Histogram and stem & leaf. Although both usually help us understand the skewness of data distribution, however, histogram deals with frequency distribution (counts of number of occurrence) and plotted on the intervals and stem&leaf list the values.

For (d). Even though dot plot shoots up and down like the histogram, the content is different. In dot plot, it is the actual value represented in dots. But in histogram, it is the frequency distribution of the class intervals.

3 0
4 years ago
80 into a ratio of 3:2
mixas84 [53]
3+2 = 5 80/5 =16 16 x 3 = 48 16 x 2 = 32 Answer= 48:32 I think this is right
6 0
4 years ago
Read 2 more answers
Which of the following binomials is a factor of x cubed plus 4 x squared plus x minus 6?
dusya [7]
The first thing we are going to do in this case is to rewrite the expression.
 We have then:
 x ^ 3 + 4x ^ 2 + x - 6
 Factoring the expression we have:
 (x-1) * (x + 2) * (x + 3)
 Therefore, we observe that the following binomial is a common factor:
 (x + 2)
 Answer:
 
B. x plus 2
7 0
3 years ago
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